Uniqueness of the Rothe method for the Burgers equation with piecewise continuous initial data
Uniqueness theorems
Universal enveloping algebras and quantization
It is shown how the universal enveloping algebra of a Lie algebra can be obtained as a formal deformation of the Kirillov-Souriau Poisson algebra of smooth functions on the dual of . This deformation process may be viewed as a “quantization” in the sense of F. Bayen, M. Flato, C. Fronsdal, A. Lichnerowicz and D. Sternheimer [Ann. Phys. 111, 61-110 (1978; Zbl 0377.53024) and ibid., 111-151 (1978; Zbl 0377.53025)]. The result presented is a somewhat more elaborate version of earlier findings...
Universal spaces
Univerzální přírodní tvary
Unsolved nonstandard problems.
Untere Schranken für die Eigenwerte Stekloffscher Eigenwertaufgaben
Use of a differential evolution algorithm for the optimization of the heat radiation intensity
This article focuses on the heat radiation intensity optimization on the surface of an aluminium shell mould. The outer mould surface is heated by infrared heaters located above the mould and the inner mould surface is sprinkled with a special PVC powder. This is an economic way of producing artificial leathers in the automotive industry (e.g. the artificial leather on car dashboards). The article includes a description of a mathematical model that allows us to calculate the heat radiation intensity...
Using interactive multimedia computer tutorials for engineering graphics education.